Ring Sintered Magnet Material for Motor/ Permanent Magnet Loudspeaker

• Customization: Available
• Certification: RoHS, CE, ISO
• Shape: Block
• Model NO.: coco
• Preparation Method: Metallothermic Reductio
• Application: Catalyst Masses, Energy Materials, Photoelectric Material, Photorecording Material, Medicine, Astronavigation, Computer, ICT
• Product Type: Rare Earth Magnet
• Composition: Neodymium
• Coating: Zinc
• Size: Acceptable Custom
• Application Field: Permanent-Magnet Loudspeaker
• Type: Permanent
• Transport Package: According to Your Request
• Specification: RoHs
• Trademark: COCO
• Origin: Zhejiang Ningbo China
• HS Code: 3352968184
• Production Capacity: 2000t/Y

Product Description

Product Name: Rare Earth Neodymium(NdFeB) Magnets

Materials Trademark:
N35-N50, 33M-48M, 30H-45H, 27SH-45SH, 25UH-40UH, 23EH-38EH
All Trademarks are available.
Working Temperature: 80-200(° C)

Product Feature:
Produced by the powder metallurgical method with chemical composition of ND2Fe14B
Very brittle and hard
Poorest corrosion resistance of all commercial magnetic material
High resistance to magnetic demagnetization
Excellent cost to performance ratio
Reasonable temperature stability
Not suitable for application which exposed to high temperatures

NdFeB permanent magnet is mainly used in Micro-motor, Electronic Industry, Car Industry, Petrochemical, NMR devices, Sound equipments, Maglev System, Magnetic drive and Magnetotherapy system, and its also used in Motorbikes, Car oil-duct's magnetization, with the aim of saving oil.
Earth permanent magnet (NdFeB) has the strongest magnetism nowadays. It does not only has high remanence, high coercivity, high energy product, and high-functional, but also it can processed into a variety of sizes easily. Now, it is widely used in avigation, spaceflight, electron, electrical sound, electrical machinery, apparatus, meters, medical technology, and especially apply to develop high-performance, small and light replacements.

Our factory produce and manufacture magnets according to customer's design on shape, dimension, grades, coatings etc.
To offer you our magnets price, please offer the following details:
Magnets grade: From N35 To N50, from N Series to UH Series.
Magnets size: As the drawing
Magnetism direction: Which direction to oriented The north pole and south pole
Magnets coating: Nickel, Zn, Black Epoxy, AG, Au etc.
Quantities: More mass order quantities. More Lower the prices. Original factory.

If you haven't been able to find your desired size or strength in our website?
We can send you a price quotation for exactly the magnet you wish...At no obligation to you. Here's how it works:
We can offer you not only standard forms (Disc/Rod, Block, Cube, Sphere, Ring). But also special demands, like borings, grades, countersinks, pole markers, etc.
Tell us which features you desire in a magnet (shape, size, strength, surface coating, and temperature resistance) and the quantity you will require.
You will receive our price quotation via e-mail within a day.
You will be under no obligation to buy.

When inquiring or ordering, please send us following information
1. Type of magnet (material & grade)
2. Quantity (annual and per shipment)
3. Shape and dimensions (drawing if necessary)
4. Direction of magnetization
5. Magnetized or unmagnetized
6. Details of surface treatment
7. Application if possible
8. Other information and/or requirements

We hope to cooperate with you. Thank you.

Magnetic  properties  of  Sintered  Neodymium  Magnet  (NdFeB  magnet):
Grade	Remanence	Coercive Force	Intrinsic  Coercive  Force	Max.   energy  product	Max. Operating Temperature
	Br mT (kGs)	Hcb kA/m (kOe)	Hcj kA/m (kOe)	(  BH  )max  kJ/m 3 (MGOe)	Tw
N35	1170-1220 (11.7-12.2)	≥   868 (  ≥ 10.9)	≥   955 (  ≥   12)	263-287 (33-36)	80  deg
N38	1220-1250 (12.2-12.5)	≥   899 (  ≥ 11.3)	≥   955 (  ≥   12)	287-310 (36-39)	80  deg
N40	1250-1280 (12.5-12.8)	≥   907 (  ≥ 11.4)	≥   955 (  ≥   12)	302-326 (38-41)	80  deg
N42	1280-1320 (12.8-13.2)	≥   915 (  ≥ 11.5)	≥   955 (  ≥   12)	318-342 (40-43)	80  deg
N45	1320-1380 (13.2-13.8)	≥   923 (  ≥ 11.6)	≥   955 (  ≥   12)	342-366 (43-46)	80  deg
N48	1380-1420 (13.8-14.2)	≥   923 (  ≥ 11.6)	≥   876 (  ≥   12)	366-390 (46-49)	80  deg
N50	1400-1450 (14.0-14.5)	≥   796 (  ≥ 10.0)	≥   876 (  ≥   11)	382-406 (48-51)	60  deg
N52	1430-1480 (14.3-14.8)	≥   796 (  ≥ 10.0)	≥   876 (  ≥   11)	398-422 (50-53)	60  deg
30M	1080-1130 (10.8-11.3)	≥   796 (  ≥ 10.0)	≥   1114 (  ≥   14)	223-247 (28-31)	100  deg
33M	1130-1170 (11.3-11.7)	≥   836 (  ≥ 10.5)	≥   1114 (  ≥   14)	247-263 (31-33)	100  deg
35M	1170-1220 (11.7-12.2)	≥   868 (  ≥ 10.9)	≥   1114 (  ≥   14)	263-287 (33-36)	100  deg
38M	1220-1250 (12.2-12.5)	≥   899 (  ≥ 11.3)	≥   1114 (  ≥   14)	287-310 (36-39)	100  deg
40M	1250-1280 (12.5-12.8)	≥   923 (  ≥ 11.6)	≥   1114 (  ≥   14)	302-326 (38-41)	100  deg
42M	1280-1320 (12.8-13.2)	≥   955 (  ≥ 12.0)	≥   1114 (  ≥   14)	318-342 (40-43)	100  deg
45M	1320-1380 (13.2-13.8)	≥   995 (  ≥ 12.5)	≥   1114 (  ≥   14)	342-366 (43-46)	100  deg
48M	1360-1430 (13.6-14.3)	≥   1027 (  ≥   12.9)	≥   1114 (  ≥   14)	366-390 (46-49)	100  deg
50M	1400-1450 (14.0-14.5)	≥   1033 (  ≥   13.0)	≥   1114 (  ≥   14)	382-406 (48-51)	100  deg
30H	1080-1130 (10.8-11.3)	≥   796 (  ≥ 10.0)	≥   1353 (  ≥   17)	223-247 (28-31)	120  deg
33H	1130-1170 (11.3-11.7)	≥   836 (  ≥ 10.5)	≥   1353 (  ≥   17)	247-271 (31-34)	120  deg
35H	1170-1220 (11.7-12.2)	≥   868 (  ≥ 10.9)	≥   1353 (  ≥   17)	263-287 (33-36)	120  deg
38H	1220-1250 (12.2-12.5)	≥   899 (  ≥ 11.3)	≥   1353 (  ≥   17)	287-310 (36-39)	120  deg
40H	1250-1280 (12.5-12.8)	≥   923 (  ≥ 11.6)	≥   1353 (  ≥   17)	302-326 (38-41)	120  deg
42H	1280-1320 (12.8-13.2)	≥   955 (  ≥ 12.0)	≥   1353 (  ≥   17)	318-342 (40-43)	120  deg
45H	1300-1360 (13-13.6)	≥   963 (  ≥ 12.1)	≥   1353 (  ≥   17)	326-358 (43-46)	120  deg
48H	1370-1430 (13.7-14.3)	≥   995 (  ≥ 12.5)	≥   1353 (  ≥   17)	366-390 (46-49)	120  deg
30SH	1080-1130 (10.8-11.3)	≥   804 (  ≥ 10.1)	≥   1592 (  ≥   20)	223-247 (28-31)	150  deg
33SH	1130-1170 (11.3-11.7)	≥   844 (  ≥ 10.6)	≥   1592 (  ≥   20)	247-271 (31-34)	150  deg
35SH	1170-1220 (11.7-12.2)	≥   876 (  ≥ 11.0)	≥   1592 (  ≥   20)	263-287 (33-36)	150  deg
38SH	1220-1250 (12.2-12.5)	≥   907 (  ≥ 11.4)	≥   1592 (  ≥   20)	287-310 (36-39)	150  deg
40SH	1240-1280 (12.5-12.8)	≥   939 (  ≥ 11.8)	≥   1592 (  ≥   20)	302-326 (38-41)	150  deg
42SH	1280-1320 (12.8-13.2)	≥   987 (  ≥ 12.4)	≥   1592 (  ≥   20)	318-342 (40-43)	150  deg
45SH	1320-1380 (13.2-13.8)	≥   1003 (  ≥   12.6)	≥   1592 (  ≥   20)	342-366 (43-46)	150  deg
28UH	1020-1080  (10.2-10.8)	≥   764 (  ≥ 9.6)	≥   1990 (  ≥   25)	207-231 (26-29)	180  deg
30UH	1080-1130  (10.8-11.3)	≥   812 (  ≥ 10.2)	≥   1990 (  ≥   25)	223-247 (28-31)	180  deg
33UH	1130-1170 (11.3-11.7)	≥   852 (  ≥ 10.7)	≥   1990 (  ≥   25)	247-271 (31-34)	180  deg
35UH	1180-1220 (11.8-12.2)	≥   860 (  ≥ 10.8)	≥   1990 (  ≥   25)	263-287 (33-36)	180  deg
38UH	1220-1250 (12.2-12.5)	≥   876 (  ≥ 11.0)	≥   1990 (  ≥   25)	287-310 (36-39)	180  deg
40UH	1240-1280 (12.5-12.8)	≥   899 (  ≥ 11.3)	≥   1990 (  ≥   25)	302-326 (38-41)	180  deg
28EH	1040-1090 (10.4-10.9)	≥   780 (  ≥ 9.8)	≥   2388 (  ≥   30)	207-231 (26-29)	200  deg
30EH	1080-1130  (10.8-11.3)	≥   812 (  ≥ 10.2)	≥   2388 (  ≥   30)	223-247 (28-31)	200  deg
33EH	1130-1170 (11.3-11.7)	≥   836 (  ≥ 10.5)	≥   2388 (  ≥   30)	247-271 (31-34)	200  deg
35EH	1170-1220 (11.7-12.2)	≥   876 (  ≥ 11.0)	≥   2388 (  ≥   30)	263-287 (33-36)	200  deg
38EH	1220-1250 (12.2-12.5)	≥   899 (  ≥ 11.3)	≥   2388 (  ≥   30)	287-310 (36-39)	200  deg
30AH	1080-1120 (10.8-11.2)	≥   812 (  ≥ 10.2)	≥   2785 (  ≥   35)	223-255 (28-32)	220  deg
33AH	1120-1170 (11.2-11.7)	≥   812 (  ≥ 10.2)	≥   2785 (  ≥   35)	247-271 (31-34)	220  deg
Physical  and  Mechanical  Properties  of  Neodymium  Magnet:
Thermal  Conductivity			7.7  kcal/m-h-° C
Young' s  Modulus			1.7  x  104  kg/mm2
Bending  Strength			24  kg/mm2
Compressive  Strength			80  kg/mm2
Electrical  Resistivity			160  µ -ohm-cm/cm2
Density			7.4-7.55  g/cm3
Vickers  Hardness			500  -  600
Available  coatings  for  sintered  Neodymium  Magnet  (NdFeB  magnet):
Available  Coatings:
Surface	Coating	Thickness  (Microns)	Color	Resistance
Passivation		1	Silver  Grey	Temporary  Protection
Nickel	Ni+Ni	10.0-20	Bright  Silver	Excellent  against  Humidity
	Ni+Cu+Ni
Zinc	Zn	8.0-20	Bright  Blue	Good  Against  Salt  Spray
	C-Zn		Shinny  Color	Excellent  Against  Salt  Spray
Tin	Ni+Cu+Sn	15-20	Silver	Superior  Against  Humidity
Gold	Ni+Cu+Au	10.0-20	Gold	Superior  Against  Humidity
Copper	Ni+Cu	10.0-20	Gold	Temporary  Protection
Epoxy	Epoxy	15-25	Black,   Red,   Grey	Excellent  Against  Humidity &   Salt  Spray
	Ni+Cu+Epoxy
	Zn+Epoxy
Chemical	Ni	10.0-20	Silver  Grey	Excellent  Against  Humidity
Parylene	Parylene	5.0-20	Grey	Excellent  Against  Humidity,   Salt  Spray.   Superior  Against  Solvents,   Gases,   Fungi  and  Bacteria. FDA  Approved.